now, chairman of the department of medicine at newark beth israel medical center. what do you make of it? >> well, he's 88 years old. this is a president who's been in exceptionally good health. i mean, he jumps out of airplanes at the age of 85 which i thought was an absolutely amazing guy. i can recall his illnesseses over his life which included a thyroid problem, you remember when he was president. one worries about an 88-year-old who comes in with trach yo bronchitis with a chronic cough, perhaps a low-grade fever. gregg: what does that mean, pneumonia? >> yeah, well, it could mean knew known ya. bronchitis is an inin mission of the tubes that go into the lung, and you have trouble clearing mucus. you have trouble coughing, and coughing causes a lot of problems, so pneumonia is a possibility. and then when you're that old, you run the risk of a blood infection, and that can be lethal for somebody over the age of 75. gregg: what happens? >> it'll cause organ failure, and it is often times fatal. so i think the doctors are playing it safe. put him on antibiotics -- gregg: right.